From 14b7f4a1edf15808cf52dc38277ffe1d84854839 Mon Sep 17 00:00:00 2001
From: Jeff Layton <jlayton@poochiereds.net>
Date: Thu, 5 May 2016 06:53:47 -0400
Subject: nfsd: handle seqid wraparound in nfsd4_preprocess_layout_stateid

Move the existing static function to an inline helper, and call it.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---
 fs/nfsd/state.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'fs/nfsd/state.h')

diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index c050c53036a6..986e51e5ceac 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -573,6 +573,11 @@ enum nfsd4_cb_op {
 	NFSPROC4_CLNT_CB_SEQUENCE,
 };
 
+/* Returns true iff a is later than b: */
+static inline bool nfsd4_stateid_generation_after(stateid_t *a, stateid_t *b)
+{
+	return (s32)(a->si_generation - b->si_generation) > 0;
+}
 
 struct nfsd4_compound_state;
 struct nfsd_net;
-- 
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